O.R.S Sport electrolyte tablets enable your body to absorb water faster and stay hydrated for longer by replacing the fluids and electrolytes you lose when you sweat. The electrolytes in O.R.S Sport are combined with a small low-calorie (17kcal) amount of glucose which creates an osmotic gradient that enables your body to absorb fluids sooner rather than travelling through the entire digestive system. O.R.S Sport also contains Magnesium and Vitamin B which helps to reduce fatigue and support efficient muscle function.